Dry-cell battery.



%ATE@ ISAIAH FLETCHER,

OF IUKA, ILLINOIS.

DRY-CELL BATTERY.

menace;

l lo Drawing.

To aZZ whom it may concern:

Be it known that l, ISAIAH FLETCHER, a citizen of the United titates, residing at luka, in the county of ltlarion and State of Illinois, have invented certain new and useful linprovements in Dry-Cell Batteries, of Which the following is a specification.

The present invention relates to an im proved impregnating solution, or liquld chemical composition, especially adapted and intended. for r charging dry cell batteries, and particul such batteries of the type as used in telephone circuits.

l have herein. disclosed one complete eX- ample of the ph sical embodiment of my invention, prepared according to the best formula l have discovered for the prac tical application of the principles of the in Vcntion, and this formula has proven highly successful and eflicient in actual tests and practical use.

The formula follows:

Acid; vinegar, one quart;

Acetic acid, two ounces;

@alicylic acid, one ounce;

Carbolic acid (crude), one-half ounce.

ln mixing the solution, in approximately for preparing the solution is the above proportions, the acid vinegar is prepared in a suitable receptacle and then the other ingredients are successively added thereto, in proper proportions, the ingredients, of course being thoroughly stirred and mixed together as they are successively added, the result being a clear, comparatively thin, solution, extremely suitable for the purpose for Which it is intended.

In the process of recharging batteries or dr cells with the solution, the elements of the battery are first punctured or perforated a sutficient number of places, by a tool,

Specification of Letters Patent. Pwt gnmg i @rgfp 13331 Application fi1ed March 13, 1918. Serial No. 222,129.

such as an and or other similar instrument, the puncture or perforation preferably heir from the outside of the battery to the eel. of the carbon.

, After the carbon has been properly pe forated it is placed in a suitable vessel, 2 then the solution is poured into the ,until the carbon element is nearly merged. The carbon is permitted to run in the solution for a suitable period or say three or four hours for the usual batterycell as employed on telephone cuits, and in this time the solution Ineatcs the carbon, through the perforations 5 or passages prepared for it in the carb the passages acting as channels for intro tion of the solution to the interior of carbon, and from thence the solution per-- meates in all directiohs, thus edectively inn pregnating practically all parts of the carbon to the capacity of the absorbing qualities of the carbon. After a suitable time has elapsed, the r bon or element of the battery is remor from the solution, thoroughly and carefully dried, and then the perforations or passages in the carbon are plugged With suitable ma terial, as war, or putty, to seal the openings, and the impregnated carbons are read 1 use. After the carbons have been exhausted, they can be again impregnated With the lution and are ready for use.

What I claim is An impregnating solution. as descrih comprising in suitable proportions: he. vinegar, acetic acid, salicylic acid, carbolic acid.

Dated this 9th day of March, 1918, f. Marion county, Illinois. 

